JPH08614Y2 - Air conditioner heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a heat exchanger of an air conditioner, and more particularly to a structure of a heat exchanger formed by bending after lamination.

[Conventional technology]

Although air conditioners have been improved in performance and are becoming smaller in size, for example, in an indoor unit, a heat exchanger 22 arranged inside a main body 21 is divided into upper and lower parts as shown in FIG. The exchanger is tilted backwards to reduce the height and reduce wasted space as much as possible to make it more compact.

By the way, as shown in FIG. 7, the heat exchanger 22 comprises a plurality of laminated fins 23, a heat transfer tube 24 passed through the fins 23, a fitting 25, etc. For example, as shown in FIG. 8, a hole for passing the heat transfer tube 24
The 26 are arranged in a staggered arrangement, and a plurality of cut-and-raised parts 27 are formed between the holes 26 to improve the heat dissipation (heat exchange). From the center to the slit 28, two slits
In the center where 28 face each other, leaving a connecting portion 29 which is still a flat plate,
The connecting portion 29 is bent after stacking.

[Problems to be solved by the device]

However, as described above, the heat exchanger 22 is moved up and down by two.
Although it is possible to reduce the height in the vertical direction to some extent by splitting and tilting the upper heat exchanger 22b rearward, there is a limit to this.

Further, if the connecting portion 29 is located at the center of the fin 23, unless the connecting portion 29 is formed to be long, when the connecting portion 29 is bent,
There is a drawback that the end faces provided with the slits 28 are in contact with each other and cannot be greatly bent.

In addition, since the connecting portion 29 is in the form of a flat plate, it is not easy to fold it, the bending position is not constant, and the swelling, folding, or contact between the fins 23 causes the size of the bent portion to be different. The variation may become large, and the workability of attaching to the main body 21 may deteriorate.

Therefore, even if the connecting portion 29 is provided near the end surface of the fin 23, if the shape is the same as that described above, the problem cannot be solved, and sometimes the fin on the upper portion during operation or after operation is stopped. In some cases, water drops flowing down from 23 cannot cross the connecting portion 29 and fall.

Therefore, it is an object of the present invention to solve these problems, to provide a heat exchanger for an air conditioner that can be further downsized and can be easily bent.

[Means for solving the problem]

The present invention has been made to solve the above-mentioned problems, and a plurality of fins having a plurality of holes for inserting a heat transfer tube and a plurality of cut and raised portions for ventilation are formed in a plate surface by passing the fin through the heat transfer tube. In a heat exchanger of an air conditioner formed by stacking, a plurality of slits are provided from one end of the fin to the other end, and another portion is provided at a connecting portion formed between the slit and the other end. A substantially triangular notch or protrusion having a side end as a base was provided, and after stacking, the upper two surfaces were bent so that the upper two surfaces had an inverted V shape with the notch or protrusion as the center.

[Action]

In the above configuration, centering on the notch or protrusion of the triangle formed in the connecting portion after the fins are stacked, the middle heat exchanger is bent backward with respect to the lower heat exchanger in the lower connecting portion, and In the upper connecting portion, the upper two surfaces are formed in an inverted V shape by bending the upper heat exchanger downward with respect to the middle heat exchanger.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an external perspective view of an indoor unit of an air conditioner, in which 1 represents a main body, and the main body 1 is composed of a housing 2 and a front cover 3 attached to the front of the housing 2, and an upper portion of the housing 2 Further, the indoor air intake ports 4 and 5 are provided from the upper part to the front face of the front cover 3, and the air outlet 6 is formed in the lower part.

FIG. 2 is a vertical side view of the indoor unit, in which an air passage 7 is formed between the suction ports 4 and 5 and the air outlet 6.
In the air passage 7, a detachable air filter 8 that can be moved along the inner surface of the front cover 3 to the ceiling of the housing 2, a heat exchanger 9 folded in three, and a fan motor 10 is arranged, the air that has been heat-exchanged by the heat exchanger 9 is sent to the outlet 6 by the fan motor 10, and the wind direction into the room is adjusted by the wind direction control means 11 including a plurality of wind direction plates. ing.

The heat exchanger 9 includes a plurality of fins 12 stacked as shown in FIG. 3, a plurality of heat transfer tubes 13 passed through the fins 12, and mounting brackets 14 mounted on both sides. Is divided into three parts, a lower heat exchanger 9a, a middle heat exchanger 9b, and an upper heat exchanger 9c, and the middle heat exchanger 9b and the upper heat exchanger 9c are provided above the upright lower heat exchanger 9a. And are bent so as to form an inverted V shape, and the three members are arranged in a row.

As shown in FIG. 4, the fins 12 are provided with holes 15 through which the heat transfer tubes 13 are passed in a staggered arrangement.
A plurality of cut-and-raised parts 16 for improving heat dissipation (heat exchange) are respectively formed between the holes 15 and the holes 15, and two slits are formed from one end to the other end in a portion to be bent after stacking. 17 is provided, and the two connecting portions 18 formed between the slit 17 and the other side end are provided with substantially triangular notches 19 having the other side end as a base, and when bending, It can be bent around the notch 19.

FIG. 5 shows another example in which the holes 15 through which the heat transfer tubes 13 are inserted are aligned vertically and horizontally. In this case, the slits 17 are fins.
Since it can be provided straight from one side end to the other side end of 12, it is advantageous for bending as shown in FIG.

In addition, although the protrusion 18 is provided in the connecting portion 18 shown in FIG. 5, it is not limited to this, and a notch 19 as shown in FIG. 4 may be provided, and the notch 19 of FIG. You may make a protrusion 20 such as.

[Effect of device]

As described above, in the heat exchanger of the present invention, the upper two surfaces of the middle and upper stages are bent and formed in an inverted V shape, so that the vertical height can be significantly reduced, and the heat exchanger itself is small in size. It is possible to contribute to downsizing of the air conditioner as well as to reduce the size of the air conditioner.Moreover, since the notch or protrusion is formed in the fin connecting portion and the bending is performed around the notch or protrusion, the connecting portion and the Extreme deformation does not occur around it, the accuracy of the mounting dimensions after bending is also improved, the degree of contact between fins at the connection part is also improved, and the flow of water drops generated during operation is also improved. It is possible to obtain effects such as improvement.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of an indoor unit showing an embodiment of the present invention,
2 is a vertical side view of the same embodiment, FIG. 3 is a perspective view of the heat exchanger of the same embodiment, FIG. 4 is an explanatory view of fins used in the heat exchanger of the same embodiment, and FIG. Is an explanatory view of another fin used in the heat exchanger of the same embodiment, FIG. 6 is a vertical sectional side view of an indoor unit showing a conventional example, and FIG. 7 is a perspective view of a conventional heat exchanger. FIG. 8: is explanatory drawing of the fin used for the heat exchanger of a prior art example. In the figure, 1 ... Main body, 2 ... Housing, 3 ... Front cover, 4,
5 ... Suction port, 6 ... Blowout port, 7 ... Blower, 8 ... Air filter, 9 ... Heat exchanger, 10 ... Fan motor, 11 ... Wind direction control means, 12 ... Fin, 13 ...... Heat transfer tube, 14 …… Mounting bracket, 15 …… Hole, 16 …… Cut and raise, 17
…… Slit, 18 …… Coupling, 19 …… Notch, 20 ……
Stick out.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A heat exchanger for an air conditioner, comprising a plurality of fins each having a plurality of holes for inserting a heat transfer tube and a plurality of cut-and-raised parts for ventilation, which are laminated on a plate surface by passing through the heat transfer tube. ,
A plurality of slits are provided from one end of the fin toward the other end, and a connecting portion formed between the slit and the other end has a substantially triangular cut or protrusion with the other end as a base. And a heat exchanger for an air conditioner, which is formed by stacking and is bent so that the upper two surfaces have an inverted V shape around the cut or protruding portion.